SPECIFICATION

Section 07 95 13

Nystrom Cover Plates

Model(s) SW Series

Horizontal Corner System

PART 1 - GENERAL

1.01Work Included

A.The work shall consist of furnishing and installing expansion joints in accordance with the details shown on the plans and the requirements of the specifications. The joints are proprietary designs utilizing preformed metal components and anchors.

B.Related Work

- Cast-in-place concrete

- Miscellaneous and ornamental metals

- Flashing and sheet metal

1.02Submittals

A.Template Drawings - Submit typical expansion joint cross-section(s) indicating pertinent dimensioning, general construction, component connections, and anchorage methods.

1.03Product Delivery, Storage and Handling

A.Deliver products in each manufacturer's original, intact, labeled containers and store under cover in a dry location until installed. Store off the ground, protect from weather and construction activities.

1.04Acceptable Manufacturer

  1. Subject to compliance with requirements, provide products from the following manufacturer:

Nystrom Building Products

9300 73rd Ave. N

Brooklyn Park, MN 55428

Toll Free Hotline: 800-547-2635

Toll Free Fax: 888-317-8770

Direct Phone: 763.488.9200

Direct Fax: 763.488.9201

E-Mail:

Internet:

B.Alternate manufacturers and their products will be considered, provided they meet the design concept and are produced of materials that are equal to or superior to those called for in the base product specification.

C.Any proposed alternate systems must be submitted and receive approval 21 days prior to the bid. All post bid submittals will not be considered. This submission shall be in accordance with MATERIALS AND SUBSTITUTIONS.

- Any manufacturer wishing to submit for prior approval must provide the following:

1.A working 6” sample of the proposed system with a letter describing how system is considered superior to the specified system.

2.A project proposal drawing that illustrates the recommended alternate system installed in the floor construction that is specific to the project. Typical catalog cut sections will not be considered.

3.Verifiable list of prior installations showing prior and successful experience with the proposed systems.

4.Any substitution products not adhering to all specification requirements within, will not be considered.

1.05Quality Assurance

A. Manufacturer: Shall have a minimum ten (10) years experience specializing in the design and manufacture of Architectural Expansion Control Systems.

PART 2 - PRODUCT

2.01General

Provide corner floor joint cover consisting of metal profile required to satisfy projects movement and loading requirements. Secure cover plate to concrete wall slab by utilizing anchoring system, supplied by others.

Furnish Nystrom, Model “SW” meeting ADA guidelines for interior corner joint locations as manufactured by Nystrom and as indicated on drawings. Select Model based on requirements.

2.02Components and Materials

  1. Aluminum Extrusions – Material to conform to properties of ASTM B221; alloy 6005-T5 or 6063-T6.
  1. Moisture Protection (if required) – Provide EPDM sized to accommodate opening width and movement.
  1. Anchorage:

1) Corner Condition Wall Mount Profile

– Anchor to be supplied by installing contractor. Anchor type to be determined by wall construction.

D. Fire Barrier Assembly - Designed to provide the required fire endurance rating, minimize passage of smoke and accommodate dynamic movement without stress or degradation to its components. Test system in maximum joint width incorporating a field splice. Supply Nystrom Fire Barrier System as governed by joint opening, test requirements and fire rating.

E. Concrete Slab Repair (recommended) - Utilize manufacturer’s single component rapid strength repair mortar meeting the following data requirements.

Compressive strength, psi (ASTM C 109)

2 hours1,500

24 hours4,500

7 days8,000

28 days9,000

2.03Fabrication

  1. Extrusions to be shipped in standard 10 ft. lengths and shall be cut to length on jobsite where required. Profiles shall be miter cut in the field to conform to directional changes unless otherwise contracted with expansion joint manufacturer.
  1. Anchor holes for corner condition wall mount profile shall be countersunk and field drilled by installing contractor at 12” o.c.

C.Fire Barriers - Ship manufacturer’s standard assembly for the required hourly rating. Fire barrier shall be miter cut in the field to accommodate changes in direction.

2.04Finishes

A.All Profiles

  1. Standard - Aluminum extrusions shall be supplied in mill finish with clear anodized.

PART 3 - EXECUTION

3.01Installation

A. Verify that project conditions are suitable for proper installation of system.

B.Protect all expansion joint component parts from damage during installation and placement of finish floor materials and thereafter until completion of structure.

  1. Expansion joint systems shall be installed in strict accordance with the manufacturer's typical details and instructions along with the advice of their qualified representative.
  1. Anchor holes for corner condition wall mount profile shall be countersunk and field drilled by installing contractor at 12” o.c.

3.02Clean and Inspect

A.Upon completing installation the contractor shall clean all exposed metal surfaces with a suitable cleaner that will not harm or attack the finish. Contact manufacturer should questions arise regarding suitability of any cleaner type prior to its use.